US6667731B2 - Method for driving backlight parts in a mobile phone - Google Patents

Method for driving backlight parts in a mobile phone Download PDF

Info

Publication number
US6667731B2
US6667731B2 US09/829,635 US82963501A US6667731B2 US 6667731 B2 US6667731 B2 US 6667731B2 US 82963501 A US82963501 A US 82963501A US 6667731 B2 US6667731 B2 US 6667731B2
Authority
US
United States
Prior art keywords
backlight
display
keypad
cover
backlight part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime, expires
Application number
US09/829,635
Other versions
US20020021276A1 (en
Inventor
Jae-Sun Park
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PARK, JAE-SUN
Publication of US20020021276A1 publication Critical patent/US20020021276A1/en
Application granted granted Critical
Publication of US6667731B2 publication Critical patent/US6667731B2/en
Adjusted expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0267—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by controlling user interface components
    • H04W52/027—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by controlling user interface components by controlling a display operation or backlight unit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates generally to a mobile phone, and in particular, to a control method for driving backlight parts to provide a backlight to a display and a keypad.
  • a mobile phone has a backlight function that allows a user to identify information on a display and keys on a keypad.
  • the mobile phone includes a display backlight part for providing backlight to a display, such as an LCD (Liquid Crystal Display), and a keypad backlight part for providing backlight to the keypad.
  • a display backlight part for providing backlight to a display, such as an LCD (Liquid Crystal Display)
  • a keypad backlight part for providing backlight to the keypad.
  • an EL Electrode
  • LED Light Emitting Diode
  • FIG. 1 is a block diagram of a mobile phone, mainly illustrating parts related with driving backlight parts.
  • an RF (Radio Frequency) module 100 processes an RF signal and transmits/receives the RF signal under the control of a controller 106 .
  • a keypad 102 is provided with a plurality of digit keys and function keys and transmits data corresponding to key input to the controller 106 .
  • a cover monitor 104 senses the closing and opening of a flip cover or a folder cover and notifies the controller 106 of the cover state.
  • the controller 106 turns ON or turns OFF a display backlight part 108 and a keypad backlight part 110 , according to the key data received from the keypad 102 , depending on the cover state data received from the cover monitor 104 .
  • step 200 the controller 106 determines whether key input data has been received or, if the cover is opened. Upon receipt of the key input data from the keypad 102 , or upon receipt of information indicating that the cover has been opened from the cover monitor 104 , the controller 106 turns ON both the display backlight part 108 and the keypad backlight part 110 in step 202 . Hence, backlight is provided to a display (not shown) and the keypad 102 . In this state, the controller 106 checks whether a predetermined time has elapsed in step 204 .
  • the controller 106 turns OFF both the display backlight part 108 and the keypad backlight part 110 in step 206 , thereby preventing power dissipation caused by the long ON-state of the display backlight part 108 and the keypad backlight part 110 .
  • the display backlight part and the keypad backlight part are turned ON at the same time when a user presses a key or opens a flip or folder cover.
  • RSSI Received Signal Strength Indicator
  • time on the display he often turns ON the display backlight part just by manipulating an external key like a volume key without opening the cover.
  • a backlight is unnecessarily provided to the keypad when the cover is closed.
  • both backlight parts for the outer display and the inner display are turned ON even though it is not necessary to turn ON the backlight part for the inner display.
  • an object of the present invention to provide a method for driving backlight parts to prevent power dissipation caused by unnecessary operation of a display backlight part and a keypad backlight part in a mobile phone.
  • a method for driving backlight parts to provide a backlight to a display and a keypad in a mobile terminal The display backlight part and the keypad backlight part are controlled to be selectively driven, according to the state of the cover and the presence or absence of key input data.
  • FIG. 1 is a block diagram of a conventional mobile phone, mainly illustrating components related to driving backlight parts;
  • FIG. 2 is a flowchart illustrating a control operation for driving the backlight parts in the conventional mobile phone
  • FIG. 3 is a block diagram of a mobile phone, mainly illustrating components related with control of driving backlight parts, according to an embodiment of the present invention
  • FIG. 4 is a flowchart illustrating a control operation for driving the backlight parts in the mobile phone, according to the embodiment of the present invention
  • FIG. 5 is a block diagram of a mobile phone, mainly illustrating components related with control of driving backlight parts, according to another embodiment of the present invention.
  • FIG. 6 is a flowchart illustrating a control operation for driving the backlight parts in the mobile phone, according to the second embodiment of the present invention.
  • FIG. 3 is a block diagram of a mobile phone that utilizes a method to control driving backlight parts according to an embodiment of the present invention.
  • a controller 306 selectively drives a display backlight part 308 and a keypad backlight part 310 , as compared to the conventional mobile phone, shown in FIG. 1 .
  • An RF module 300 , a keypad 302 , and a cover monitor 304 are the same as their counterparts in FIG. 1 .
  • a control operation of driving the display backlight part 308 and the keypad backlight part 310 in the controller 306 will be described with reference to FIG. 4 .
  • step 400 the controller 306 checks whether a cover is open. If the controller 306 senses that the cover is open, through the cover monitor 304 , it turns ON both the display backlight part 308 and the keypad backlight part 310 in step 404 . Thus, a backlight is provided to a display (not shown) and the keypad 302 so that when the user opens the cover he can view the display or manipulate the keypad 302 , conveniently, similarly to the conventional method.
  • the controller 306 checks whether a predetermined time has elapsed in step 406 . If the predetermined time has elapsed, the controller 306 turns OFF both the display backlight part 308 and the keypad backlight part 310 in step 408 .
  • the controller 306 checks whether key input data has been received from the keypad 302 in step 402 . Upon receipt of the key input data, the controller 306 turns ON only the display backlight part 308 in step 410 . Therefore, when the user presses an external key without opening the cover to see an RSSI or time on the display, that is, when there is key input with the cover closed, a backlight is provide only to the display backlight part 308 , thereby saving power that is otherwise dissipated due to unnecessarily turning ON the keypad backlight part 310 , as compared to the conventional method. In step 412 , the controller 306 checks whether the predetermined time has elapsed. If the predetermined time has elapsed, the controller 306 turns OFF the display backlight part 308 in step 414 .
  • FIG. 5 is a block diagram of a mobile phone that is utilized to control driving backlight parts, according to another embodiment of the present invention.
  • a controller 506 selectively drives a first display backlight part 508 , a second display backlight part 510 , and a keypad backlight part 512 .
  • An outer display (not shown) installed on a folder cover is called “a first display” and an inner display (not shown) installed to be covered by the folder cover when the folder cover is closed is called “a second display.”
  • the first display backlight part 508 provides backlight to the first display and the second display backlight part 510 provides backlight to the second display.
  • An RF module 500 , a keypad 502 , and a cover monitor 504 are the same as their counterparts in FIG. 3 .
  • a control operation of driving the first and second display backlight parts 508 and 510 and the keypad backlight part 512 in the controller 506 will be described with reference to FIG. 6 .
  • step 600 the controller 506 checks whether the folder cover is open. If the controller 506 senses that the cover is open, through the cover monitor 504 , it turns on both the second display backlight part 510 and the keypad backlight part 512 in step 604 . Thus, a backlight is provided to the second display and the keypad 502 so that when the user opens the cover he can view the second display or manipulate the keypad 502 , conveniently. In this case, the first display is not turned ON unnecessarily. The controller 506 checks whether a predetermined time has elapsed in step 606 . If the predetermined time has elapsed, the controller 506 turns OFF both the second display backlight part 510 and the keypad backlight part 512 in step 608 .
  • Controller 506 can utilize a single control line to control first display backlight part 508 , and utilize separate control lines to control second display backlight part 510 and keypad backlight part 512 . For example, if first display backlight part 508 is turned ON, by controller 506 , then second display backlight part 510 or keypad backlight part 512 can be turned ON or OFF, depending on controller 506 .
  • the controller 506 checks whether key input data has been received from the keypad 502 in step 602 . Upon receipt of the key input data, the controller 506 turns ON only the first display backlight part 508 in step 610 . Therefore, when the user presses an external key without opening the cover to see an RSSI or time on the first display, the backlight is provided only to the first display, thereby saving power that is otherwise dissipated due to unnecessarily turning ON the second display and the keypad backlight part 512 . In step 612 , the controller 506 checks whether the predetermined time has elapsed. If the predetermined time has elapsed, the controller 506 turns OFF the first display backlight part 508 in step 614 .
  • the display backlight parts and the keypad backlight part are selectively turned ON according to whether a cover is opened or closed and whether key input data has been received. Therefore, unnecessary power dissipation is prevented and the life of a battery can be increased.

Abstract

There is provided a control method for driving backlight parts to provide backlight to a display and a keypad in a mobile terminal. The display backlight part and the keypad backlight part are controlled to be selectively driven, according to the state of the cover and the presence or absence of key input data. Therefore, power dissipation caused by unnecessary operation of the backlights can be prevented.

Description

PRIORITY
This application claims priority to an application entitled “Control Method for Driving Backlight Parts in Mobile Phone” filed in the Korean Industrial Property Office on Aug. 19, 2000 and assigned Serial No. 2000-48159, the contents of which are hereby incorporated by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a mobile phone, and in particular, to a control method for driving backlight parts to provide a backlight to a display and a keypad.
2. Description of the Related Art
In general, a mobile phone has a backlight function that allows a user to identify information on a display and keys on a keypad. Thus, the mobile phone includes a display backlight part for providing backlight to a display, such as an LCD (Liquid Crystal Display), and a keypad backlight part for providing backlight to the keypad. Typically, an EL (Electroluminescence Element) is used to display the backlight part and an LED (Light Emitting Diode) is used to display the keypad backlight part. The display backlight part and the keypad backlight part are driven, according to the state of the mobile phone.
FIG. 1 is a block diagram of a mobile phone, mainly illustrating parts related with driving backlight parts. Referring to FIG. 1, an RF (Radio Frequency) module 100 processes an RF signal and transmits/receives the RF signal under the control of a controller 106. A keypad 102 is provided with a plurality of digit keys and function keys and transmits data corresponding to key input to the controller 106. A cover monitor 104 senses the closing and opening of a flip cover or a folder cover and notifies the controller 106 of the cover state. The controller 106 turns ON or turns OFF a display backlight part 108 and a keypad backlight part 110, according to the key data received from the keypad 102, depending on the cover state data received from the cover monitor 104.
The method for driving the display backlight part 108 and the keypad backlight part 110 will be described in FIG. 2.
In step 200, the controller 106 determines whether key input data has been received or, if the cover is opened. Upon receipt of the key input data from the keypad 102, or upon receipt of information indicating that the cover has been opened from the cover monitor 104, the controller 106 turns ON both the display backlight part 108 and the keypad backlight part 110 in step 202. Hence, backlight is provided to a display (not shown) and the keypad 102. In this state, the controller 106 checks whether a predetermined time has elapsed in step 204. When the predetermined time has elapsed, the controller 106 turns OFF both the display backlight part 108 and the keypad backlight part 110 in step 206, thereby preventing power dissipation caused by the long ON-state of the display backlight part 108 and the keypad backlight part 110.
In the conventional control method, as described above, the display backlight part and the keypad backlight part are turned ON at the same time when a user presses a key or opens a flip or folder cover. However, in the case that the user intends to view an RSSI (Received Signal Strength Indicator) or time on the display, he often turns ON the display backlight part just by manipulating an external key like a volume key without opening the cover. In this case, due to the mechanism of simultaneously turning ON/OFF the display backlight part and the keypad backlight part, a backlight is unnecessarily provided to the keypad when the cover is closed.
In the case of a so-called dual folder-type mobile phone having two displays, one of them is disposed on the outer surface of its folder cover to allow a user to view the display, even if the folder cover is closed, and the other display is disposed in such a way that it can be seen only when the folder cover is opened. An RSSI or time is displayed on the outer display. However, a user sometimes manipulates an external key when he wants to view the RSSI or time without opening the folder cover in the dual folder-type mobile phone, as in a flip-type mobile phone and a folder-type mobile phone, having a single display. According to the above conventional method, both backlight parts for the outer display and the inner display are turned ON even though it is not necessary to turn ON the backlight part for the inner display.
Therefore, a backlight part that is unnecessarily turned ON increases power dissipation, and as a result the life of a battery decreases.
A need exists for a method and an apparatus that enables a folder or flip-type mobile communication terminal to decide if a backlight part or a keypad backlight part should be turned ON, so the power, of the mobile communication terminal, will not be dissipated.
SUMMARY OF THE INVENTION
It is, therefore, an object of the present invention to provide a method for driving backlight parts to prevent power dissipation caused by unnecessary operation of a display backlight part and a keypad backlight part in a mobile phone.
To achieve the above object, there is provided a method for driving backlight parts to provide a backlight to a display and a keypad in a mobile terminal. The display backlight part and the keypad backlight part are controlled to be selectively driven, according to the state of the cover and the presence or absence of key input data.
BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which:
FIG. 1 is a block diagram of a conventional mobile phone, mainly illustrating components related to driving backlight parts;
FIG. 2 is a flowchart illustrating a control operation for driving the backlight parts in the conventional mobile phone;
FIG. 3 is a block diagram of a mobile phone, mainly illustrating components related with control of driving backlight parts, according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a control operation for driving the backlight parts in the mobile phone, according to the embodiment of the present invention;
FIG. 5 is a block diagram of a mobile phone, mainly illustrating components related with control of driving backlight parts, according to another embodiment of the present invention; and
FIG. 6 is a flowchart illustrating a control operation for driving the backlight parts in the mobile phone, according to the second embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
A preferred embodiment of the present invention will be described hereinbelow with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.
FIG. 3 is a block diagram of a mobile phone that utilizes a method to control driving backlight parts according to an embodiment of the present invention. For a folder or flip-type mobile phone having a single display, a controller 306 selectively drives a display backlight part 308 and a keypad backlight part 310, as compared to the conventional mobile phone, shown in FIG. 1. An RF module 300, a keypad 302, and a cover monitor 304 are the same as their counterparts in FIG. 1.
A control operation of driving the display backlight part 308 and the keypad backlight part 310 in the controller 306 will be described with reference to FIG. 4.
In step 400, the controller 306 checks whether a cover is open. If the controller 306 senses that the cover is open, through the cover monitor 304, it turns ON both the display backlight part 308 and the keypad backlight part 310 in step 404. Thus, a backlight is provided to a display (not shown) and the keypad 302 so that when the user opens the cover he can view the display or manipulate the keypad 302, conveniently, similarly to the conventional method. The controller 306 checks whether a predetermined time has elapsed in step 406. If the predetermined time has elapsed, the controller 306 turns OFF both the display backlight part 308 and the keypad backlight part 310 in step 408.
When the cover is not opened in step 400, the controller 306 checks whether key input data has been received from the keypad 302 in step 402. Upon receipt of the key input data, the controller 306 turns ON only the display backlight part 308 in step 410. Therefore, when the user presses an external key without opening the cover to see an RSSI or time on the display, that is, when there is key input with the cover closed, a backlight is provide only to the display backlight part 308, thereby saving power that is otherwise dissipated due to unnecessarily turning ON the keypad backlight part 310, as compared to the conventional method. In step 412, the controller 306 checks whether the predetermined time has elapsed. If the predetermined time has elapsed, the controller 306 turns OFF the display backlight part 308 in step 414.
FIG. 5 is a block diagram of a mobile phone that is utilized to control driving backlight parts, according to another embodiment of the present invention. For a dual folder-type mobile phone having two displays, a controller 506 selectively drives a first display backlight part 508, a second display backlight part 510, and a keypad backlight part 512. An outer display (not shown) installed on a folder cover is called “a first display” and an inner display (not shown) installed to be covered by the folder cover when the folder cover is closed is called “a second display.” The first display backlight part 508 provides backlight to the first display and the second display backlight part 510 provides backlight to the second display. An RF module 500, a keypad 502, and a cover monitor 504 are the same as their counterparts in FIG. 3.
A control operation of driving the first and second display backlight parts 508 and 510 and the keypad backlight part 512 in the controller 506 will be described with reference to FIG. 6.
In step 600, the controller 506 checks whether the folder cover is open. If the controller 506 senses that the cover is open, through the cover monitor 504, it turns on both the second display backlight part 510 and the keypad backlight part 512 in step 604. Thus, a backlight is provided to the second display and the keypad 502 so that when the user opens the cover he can view the second display or manipulate the keypad 502, conveniently. In this case, the first display is not turned ON unnecessarily. The controller 506 checks whether a predetermined time has elapsed in step 606. If the predetermined time has elapsed, the controller 506 turns OFF both the second display backlight part 510 and the keypad backlight part 512 in step 608. As an alternative embodiment, the controller controls all three separate backlight parts. Controller 506 can utilize a single control line to control first display backlight part 508, and utilize separate control lines to control second display backlight part 510 and keypad backlight part 512. For example, if first display backlight part 508 is turned ON, by controller 506, then second display backlight part 510 or keypad backlight part 512 can be turned ON or OFF, depending on controller 506.
When the cover is not opened in step 600, the controller 506 checks whether key input data has been received from the keypad 502 in step 602. Upon receipt of the key input data, the controller 506 turns ON only the first display backlight part 508 in step 610. Therefore, when the user presses an external key without opening the cover to see an RSSI or time on the first display, the backlight is provided only to the first display, thereby saving power that is otherwise dissipated due to unnecessarily turning ON the second display and the keypad backlight part 512. In step 612, the controller 506 checks whether the predetermined time has elapsed. If the predetermined time has elapsed, the controller 506 turns OFF the first display backlight part 508 in step 614.
In accordance with the embodiments of the present invention as described above, the display backlight parts and the keypad backlight part are selectively turned ON according to whether a cover is opened or closed and whether key input data has been received. Therefore, unnecessary power dissipation is prevented and the life of a battery can be increased.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

What is claimed is:
1. A control method for driving backlight parts in a mobile phone, the method comprising:
providing a mobile phone having a display backlight part for providing backlight to a display, a keypad backlight part for providing backlight to a keypad, and a cover monitor for monitoring the state of a cover;
determining whether the cover is opened or closed;
determining whether key input data has been received from the keypad; and
selectively controlling the state of the display backlight part and the state of the keypad backlight part that are selectively and independently driven, according to whether the state of the cover is determined to be opened or closed and the presence or absence of key input data, by:
turning ON both the display backlight part and the keypad backlight part when the cover is open; and
turning ON only the display backlight part when key input data is received from the keypad while the cover is closed.
2. The control method of claim 1, wherein selectively controlling the display backlight part and the keypad backlight part, further comprises turning OFF a backlight part that was turned ON if a predetermined time elapses.
3. The control method of claim 1 wherein the cover is a folder cover.
4. The control method of claim 1 wherein the cover is a flip-type cover.
5. A control method for driving backlight parts in a dual folder-type mobile phone, the method comprising:
providing a mobile phone having a first display back light part for providing backlight to a first display installed on the outer surface of a folder cover, a second display back light part for providing backlight to a second display installed to be covered when the folder cover is closed, a keypad backlight part for providing backlight to a keypad, and a cover monitor for monitoring the state of the folder cover;
determining whether the cover is opened or closed;
determining whether key input data has been received from the keypad;
selectively controlling the state of the first and second display backlight parts and the keypad backlight part, according to whether the state of the cover is determined to be opened or closed and the presence or absence of key input data, by:
turning ON both the second display backlight part and the keypad backlight part when the cover is open; and
turning ON only the first display backlight part when key input data is received from the keypad while the cover is closed; and
independently driving the first and second display backlight parts and the keypad backlight part.
6. The control method of claim 5, wherein selectively controlling the first and second display backlight parts and the keypad backlight part, further comprises turning OFF a backlight part that was turned ON if a predetermined time elapses.
US09/829,635 2000-08-19 2001-04-10 Method for driving backlight parts in a mobile phone Expired - Lifetime US6667731B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020000048159A KR100362560B1 (en) 2000-08-19 2000-08-19 Method for controlling driving of backlight part in mobile phone
KR2000-48159 2000-08-19

Publications (2)

Publication Number Publication Date
US20020021276A1 US20020021276A1 (en) 2002-02-21
US6667731B2 true US6667731B2 (en) 2003-12-23

Family

ID=19684063

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/829,635 Expired - Lifetime US6667731B2 (en) 2000-08-19 2001-04-10 Method for driving backlight parts in a mobile phone

Country Status (2)

Country Link
US (1) US6667731B2 (en)
KR (1) KR100362560B1 (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020037752A1 (en) * 2000-09-26 2002-03-28 Yoshiharu Asaoka Mobile radio communication apparatus
US20020177475A1 (en) * 2001-05-25 2002-11-28 Lg Electronics Inc. Power Saving method for mobile communication terminal
US20030144023A1 (en) * 2001-10-24 2003-07-31 Woods Gregory Kent Portable communication device having back-lighting and high key press noise margin
US20030148760A1 (en) * 2001-07-23 2003-08-07 Nec Corporation Mobile station having short-range radio function and power consumption reduction method therefor
US20030234897A1 (en) * 2002-06-20 2003-12-25 Nec Corporation Display device and portable terminal apparatus
US20040204000A1 (en) * 2002-05-30 2004-10-14 Aaron Dietrich Mobile communication device including an array sensor
US20040203512A1 (en) * 2002-10-01 2004-10-14 Shyuan-Jeng Ho Flip-cover mobile phone with cover-on talking capabilty
US20050017064A1 (en) * 2003-06-24 2005-01-27 Nokia Corporation Method for visualizing the input and display components of terminal equipment and corresponding terminal equipment
US20050024318A1 (en) * 2003-07-28 2005-02-03 Inventec Appliances Corp. Method of automatically enabling or disabling backlight of electronic device based on a predetermined time
US20050136999A1 (en) * 2001-06-21 2005-06-23 Lg Electronics Inc. Folder type mobile telephone and operating method thereof
US20050145774A1 (en) * 2004-01-05 2005-07-07 Ki-Gon Yang Apparatus and method for operating and controlling display and backlight in portable terminals
WO2005083669A1 (en) * 2004-01-26 2005-09-09 Thomson Licensing S.A. Adjusting brightness of a lcd display using a backlight key of a remote control
US20050208799A1 (en) * 2004-03-22 2005-09-22 Kabushiki Kaisha Toshiba Portable information terminal
US20060199617A1 (en) * 2005-03-07 2006-09-07 Lg Electronics Inc. Apparatus and method for illuminating a key pad of a mobile communication terminal
US20070087774A1 (en) * 2005-06-13 2007-04-19 Richardson Brian T Communications device methods and apparatus including ergonomic key layout and intuitive user interface
US20080002115A1 (en) * 2006-06-30 2008-01-03 Motorola, Inc. Display stack-up for a mobile electronic device having internal and external displays
US20090280872A1 (en) * 2008-05-09 2009-11-12 Kabushiki Kaisha Toshiba Mobile apparatus
US20110122069A1 (en) * 2008-07-16 2011-05-26 Hirohito Asakura Mobile communication terminal, program and state display method
US20120212522A1 (en) * 2010-07-22 2012-08-23 Zte Corporation Method and apparatus for controlling screen backlight
US20130018628A1 (en) * 2011-07-11 2013-01-17 Parco Adam Louis Methods and devices to determine a mobile device housing position

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20012594A0 (en) * 2001-12-31 2001-12-31 Nokia Corp Improved method for manufacturing customized product and customized product
US7734316B2 (en) * 2002-08-30 2010-06-08 Motorola, Inc. User-specified outputs in mobile wireless communication devices and methods therefor
US7538745B2 (en) * 2003-03-24 2009-05-26 Ntag Interactive Corporation Apparatus and method for enhancing face-to-face communication
KR100980921B1 (en) * 2003-04-24 2010-09-07 엘지전자 주식회사 Backlight on/off period setting method for mobile communication device
US7486044B2 (en) * 2004-11-30 2009-02-03 Motorola, Inc. Light detection power system and method for same
US20060132060A1 (en) * 2004-12-16 2006-06-22 Shoei-Lai Chen Power saving method and apparatus for electronic device
US20060195354A1 (en) * 2005-02-28 2006-08-31 Ntag Interactive Corporation Method of scoring the performance of attendees at a meeting
US20070236334A1 (en) * 2006-03-31 2007-10-11 Borovoy Richard D Enhancing face-to-face communication
US20070290986A1 (en) * 2006-06-20 2007-12-20 Erkki Kurkinen Apparatus and method for disabling a user interface
US8031179B2 (en) * 2006-06-30 2011-10-04 Canon Kabushiki Kaisha Control apparatus for operation panel and electronic apparatus
US8294659B2 (en) * 2007-05-18 2012-10-23 Apple Inc. Secondary backlight indicator for portable media devices
WO2009057527A1 (en) * 2007-11-01 2009-05-07 Nec Corporation Luminance control method and display
JP5369619B2 (en) * 2008-10-31 2013-12-18 富士通モバイルコミュニケーションズ株式会社 Information processing device
JP2011030081A (en) * 2009-07-28 2011-02-10 Sony Corp Display device, display system, display method and program
JP5484513B2 (en) * 2012-04-20 2014-05-07 シャープ株式会社 Electrical equipment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278887B1 (en) * 1999-02-05 2001-08-21 Neopoint, Inc. System and method for power conservation in a wireless communication handset
US6463304B2 (en) * 1999-03-04 2002-10-08 Openwave Systems Inc. Application launcher for a two-way mobile communications device
US6480377B2 (en) * 2001-01-04 2002-11-12 Fellowes Manufacturing Company Protective case with a keyboard for a handheld computer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100301862B1 (en) * 1999-03-18 2001-09-26 서평원 Apparatus and Method for controlling Light Emitting Diode of Mobile phone

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278887B1 (en) * 1999-02-05 2001-08-21 Neopoint, Inc. System and method for power conservation in a wireless communication handset
US6463304B2 (en) * 1999-03-04 2002-10-08 Openwave Systems Inc. Application launcher for a two-way mobile communications device
US6480377B2 (en) * 2001-01-04 2002-11-12 Fellowes Manufacturing Company Protective case with a keyboard for a handheld computer

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020037752A1 (en) * 2000-09-26 2002-03-28 Yoshiharu Asaoka Mobile radio communication apparatus
US20020177475A1 (en) * 2001-05-25 2002-11-28 Lg Electronics Inc. Power Saving method for mobile communication terminal
US20070111764A1 (en) * 2001-05-25 2007-05-17 Lg Electronics Inc. Power saving method for mobile communication terminal
US7242971B2 (en) * 2001-05-25 2007-07-10 Lg Electronics Inc. Power saving method for mobile communication terminal
US7912517B2 (en) 2001-05-25 2011-03-22 Lg Electronics Inc. Power saving method for mobile communication terminal
US7583988B2 (en) * 2001-06-21 2009-09-01 Lg Electronics Inc. Folder type mobile telephone and operating method thereof
US20050136999A1 (en) * 2001-06-21 2005-06-23 Lg Electronics Inc. Folder type mobile telephone and operating method thereof
US8903462B2 (en) 2001-06-21 2014-12-02 Lg Electronics Inc. Folder type mobile telephone and operating method thereof
US8483766B2 (en) 2001-06-21 2013-07-09 Lg Electronics Inc. Folder type mobile telephone and operating method thereof
US20080139252A1 (en) * 2001-06-21 2008-06-12 Lg Electronics Inc. Folder type mobile telephone and operating method thereof
US6970726B2 (en) * 2001-07-23 2005-11-29 Nec Corporation Mobile station having short-range radio function and power consumption reduction method therefor
US20030148760A1 (en) * 2001-07-23 2003-08-07 Nec Corporation Mobile station having short-range radio function and power consumption reduction method therefor
US6807430B2 (en) * 2001-10-24 2004-10-19 Qualcomm Inc. Portable communication device having back-lighting and high key press noise margin
US20030144023A1 (en) * 2001-10-24 2003-07-31 Woods Gregory Kent Portable communication device having back-lighting and high key press noise margin
US20040204000A1 (en) * 2002-05-30 2004-10-14 Aaron Dietrich Mobile communication device including an array sensor
US20030234897A1 (en) * 2002-06-20 2003-12-25 Nec Corporation Display device and portable terminal apparatus
US7197338B2 (en) * 2002-06-20 2007-03-27 Nec Corporation Display device and portable terminal apparatus
US7221914B2 (en) * 2002-10-01 2007-05-22 Tpo Displays Corp. Flip-cover mobile phone with cover-on talking capability
US20040203512A1 (en) * 2002-10-01 2004-10-14 Shyuan-Jeng Ho Flip-cover mobile phone with cover-on talking capabilty
US7178725B2 (en) * 2003-06-24 2007-02-20 Nokia Corporation Method for visualizing the input and display components of terminal equipment and corresponding terminal equipment
US20050017064A1 (en) * 2003-06-24 2005-01-27 Nokia Corporation Method for visualizing the input and display components of terminal equipment and corresponding terminal equipment
US20050024318A1 (en) * 2003-07-28 2005-02-03 Inventec Appliances Corp. Method of automatically enabling or disabling backlight of electronic device based on a predetermined time
US7095400B2 (en) * 2003-07-28 2006-08-22 Inventec Appliances Corp. Method of automatically enabling or disabling backlight of electronic device based on a predetermined time
US20050145774A1 (en) * 2004-01-05 2005-07-07 Ki-Gon Yang Apparatus and method for operating and controlling display and backlight in portable terminals
WO2005083669A1 (en) * 2004-01-26 2005-09-09 Thomson Licensing S.A. Adjusting brightness of a lcd display using a backlight key of a remote control
US20050208799A1 (en) * 2004-03-22 2005-09-22 Kabushiki Kaisha Toshiba Portable information terminal
US7672700B2 (en) * 2004-03-22 2010-03-02 Kabushiki Kaisha Toshiba Portable information terminal
US20060199617A1 (en) * 2005-03-07 2006-09-07 Lg Electronics Inc. Apparatus and method for illuminating a key pad of a mobile communication terminal
US7890134B2 (en) * 2005-06-13 2011-02-15 Dyna Llc Communications device methods and apparatus including ergonomic key layout and intuitive user interface
US20070087774A1 (en) * 2005-06-13 2007-04-19 Richardson Brian T Communications device methods and apparatus including ergonomic key layout and intuitive user interface
US7768605B2 (en) * 2006-06-30 2010-08-03 Motorola, Inc. Display stack-up for a mobile electronic device having internal and external displays
US20080002115A1 (en) * 2006-06-30 2008-01-03 Motorola, Inc. Display stack-up for a mobile electronic device having internal and external displays
US20090280872A1 (en) * 2008-05-09 2009-11-12 Kabushiki Kaisha Toshiba Mobile apparatus
US20110122069A1 (en) * 2008-07-16 2011-05-26 Hirohito Asakura Mobile communication terminal, program and state display method
US9019208B2 (en) * 2008-07-16 2015-04-28 Lenovo Innovations Limited (Hong Kong) Mobile communication terminal, program and state display method
US20120212522A1 (en) * 2010-07-22 2012-08-23 Zte Corporation Method and apparatus for controlling screen backlight
US20130018628A1 (en) * 2011-07-11 2013-01-17 Parco Adam Louis Methods and devices to determine a mobile device housing position
US8965731B2 (en) * 2011-07-11 2015-02-24 Blackberry Limited Methods and devices to determine a mobile device housing position

Also Published As

Publication number Publication date
KR20020014954A (en) 2002-02-27
US20020021276A1 (en) 2002-02-21
KR100362560B1 (en) 2002-11-27

Similar Documents

Publication Publication Date Title
US6667731B2 (en) Method for driving backlight parts in a mobile phone
KR100662937B1 (en) Information terminal equipment provided with backlight
US6385466B1 (en) Portable terminal device
RU2310926C1 (en) Selective lighting of areas of electronic display
EP3361713A1 (en) Watch phone and method for handling an incoming call in the watch phone
US20050190196A1 (en) Method and system for using a color scheme to communicate information related to the integration of hardware and software in a computing device
GB2348577A (en) Performing a function on a radio communication device without exiting a power saving mode
KR20040019544A (en) Apparatus for controlling lcd backlight in mobile station
KR101638050B1 (en) Apparatus and method for controlling power of a portable terminal
US20020032044A1 (en) Radio communication terminal having a lighting control mechanism
CA2084026A1 (en) Illumination of displays
JP3496589B2 (en) Information processing equipment
JP2003177715A (en) Electronic apparatus
KR100595193B1 (en) A Display-Part Back- Light Power Control Device For Mobile Phone
KR100415780B1 (en) Folder-type mobile phone equipped with transparent organic light emitting device as display
KR100442942B1 (en) Method for saving battery reduce capacity by controlling power supply in call mode of image mobile phone
US20050270169A1 (en) Handheld computing device with power-saving notification
JPH10234079A (en) Portable telephone set with display function
KR100221285B1 (en) Back light control method in mobile telephone
KR100592886B1 (en) Multiple-LCD apparatus for a mobile communication terminal
KR100478309B1 (en) Portable Multi Display Device and Method for driving the same
KR20060014792A (en) Mobile phone which enable each key to backlight
KR100810236B1 (en) Apparatus and method for controlling mobile station backlight
KR20030015472A (en) System capable of reducing power consumption of personal portable terminal wiht communication functionality
KR100630087B1 (en) Back light driving method

Legal Events

Date Code Title Description
AS Assignment

Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PARK, JAE-SUN;REEL/FRAME:011709/0437

Effective date: 20010406

STCF Information on status: patent grant

Free format text: PATENTED CASE

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

FEPP Fee payment procedure

Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12